Solar cell as a waveguide:quantum efficiency of ultrathin crystalline silicon solar cells

Fang, Liping and Danos, Lefteris and Markvart, Tomas (2013) Solar cell as a waveguide:quantum efficiency of ultrathin crystalline silicon solar cells. In: 28th European Solar Photovoltaic Conference and Exhibition. EU PVSEC, pp. 31-33. ISBN 3936338337

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Abstract

An analysis of an ultra-thin crystalline silicon solar cell with 200 nm thick active layer fabricated in our laboratory shows that the behavior of quantum efficiency as a function of wavelength is primarily determined by the absorption of light in the active layer, showing a series of interference peaks. We have now modeled this solar cell in detail, perceiving the solar cell as a waveguide. Intriguingly we find that the peaks in the quantum efficiency lie close to the frequencies of the trapped (internal) modes of the waveguide. This paper provides a detailed explanation of how these modes, normally inaccessible to external observation, can be detected in external quantum response, in terms of the position of poles of the absorbance in the complex wave number plane.

Item Type:
Contribution in Book/Report/Proceedings
ID Code:
67217
Deposited By:
Deposited On:
16 Oct 2013 10:09
Refereed?:
Yes
Published?:
Published
Last Modified:
03 May 2020 23:52